Aquacultural Engineering最新文献

{"title":"Big multi-step motion and mooring load forecasting of fish cage using a novel hybrid model based on Bi-SLSTM neural network","authors":"Can Yang ,&nbsp;An Hu ,&nbsp;Daqing Wu ,&nbsp;Xiaodong Bai ,&nbsp;Lars Johanning","doi":"10.1016/j.aquaeng.2025.102601","DOIUrl":"10.1016/j.aquaeng.2025.102601","url":null,"abstract":"<div><div>Accurate forecasting of motion and mooring loads in fish cages is vital for efficient field monitoring and numerical simulations. This research introduces an innovative hybrid model that leverages Bidirectional Stateful Long Short-Term Memory (Bi-SLSTM) neural networks to predict the dynamic behavior of fish cages. By incorporating bidirectional data flow and state-preserving mechanisms, the model enhances the accuracy of multi-step predictions. Performance is assessed through the Root Mean Square Error (RMSE) and the Trapezoidal-based Integral Similarity Index (<em>R</em>_{<em>trapz</em>}). Results show that Bi-SLSTM outperforms Long Short-Term Memory (LSTM), Gated Recurrent Unit (GRU), and Bidirectional Long Short-Term Memory (BiLSTM) models, achieving <em>R</em>_{<em>trapz</em>} values above 0.85 in large multi-step predictions. Further analysis reveals that combining wave and motion data as inputs improves prediction accuracy, with surge and heave predictions reaching 91 % and 98 %, respectively. The hybrid strategy combining motion response and load data provides the best performance for mooring load prediction, with <em>R</em>_{<em>trapz</em>} values exceeding 0.85 across different output steps. The Bi-SLSTM model demonstrates strong prediction capability and robustness in forecasting cage dynamics.</div></div>","PeriodicalId":8120,"journal":{"name":"Aquacultural Engineering","volume":"111 ","pages":"Article 102601"},"PeriodicalIF":3.6,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estimation of total suspended solids by settleable solids and turbidity, using coagulants and flocculants as settlers","authors":"Magna Santos ,&nbsp;Julio Cesar Zemor ,&nbsp;Ivanilson Santos ,&nbsp;Wilson Wasielesky","doi":"10.1016/j.aquaeng.2025.102600","DOIUrl":"10.1016/j.aquaeng.2025.102600","url":null,"abstract":"<div><div>Accurate measurement of solids in different biofloc systems is essential for production optimization. Thus, this study aimed to optimize methodologies for measuring settleable solids in the culture media of <em>Penaeus vannamei</em> with photoautotrophic, heterotrophic, and chemoautotrophic predominance by applying different doses of chemical products to force the sedimentation of solids in the Imhoff cone to perform correlation and regression analyses with total suspended solids and turbidity. This study also evaluated water quality parameters, microbial community composition, proximal composition, and shrimp growth performance. The evaluated products were aluminum polychloride (100 %), copper sulfate (19.5 %), and aluminum sulfate (100 %), commonly used in water and effluent treatment. The 70-day experiment was conducted with <em>P. vannamei</em> at a density of 500 shrimp. m⁻³. Aluminum sulfate and aluminum polychloride were the most effective in optimizing the compaction and sedimentation of solids, particularly in the predominantly photoautotrophic and heterotrophic media. Equations were proposed to estimate total suspended solids by settleable solids and turbidity values. Considering the strength of correlation and the lower standard error of estimation, producers are advised to estimate total suspended solids concentrations not only by settleable solids values but also by turbidity, because this is a quick and practical unit of measurement to analyze throughout the shrimp production cycle. The findings provide a fast-reading and predictive method to support decision-making in biofloc systems management.</div></div>","PeriodicalId":8120,"journal":{"name":"Aquacultural Engineering","volume":"111 ","pages":"Article 102600"},"PeriodicalIF":3.6,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144605595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microalgae plant site selection analysis: A multi-criteria decision model based on hierarchical analysis, geographic information systems and Monte Carlo simulations","authors":"Shuai Guo ,&nbsp;Feng Pan ,&nbsp;Jun Wang ,&nbsp;Feng Li ,&nbsp;Hongwei Ke ,&nbsp;Chunhui Wang ,&nbsp;Minggang Cai","doi":"10.1016/j.aquaeng.2025.102599","DOIUrl":"10.1016/j.aquaeng.2025.102599","url":null,"abstract":"<div><div>This study develops an integrated Analytic Hierarchy Process-Geographic Information System-Monte Carlo simulation (AHP-GIS-MCS) framework to address the critical yet underexplored challenge of province-level strategic siting for microalgae cultivation plants in China. The methodology synergizes: (1) AHP to establish criteria priorities (Sunshine weighting 0.458), (2) GIS for geographic constraint mapping, and (3) MCS (10,000 trials, ±20 %-40 % perturbations) for uncertainty quantification. Kunming, Yunnan Province, emerged as the optimal location (100 % stability under perturbations) due to exceptional annual effective sunlight duration (2 345.0 h), favorable temperature, and competitive industrial costs, with Urumqi and Hohhot as socioeconomic-contingent alternatives. This work establishes a scalable decision-support paradigm for bioenergy planning while bridging theoretical gaps in algal plant siting methodologies. Future extensions should prioritize fuzzy-AHP implementation, dynamic policy module integration, and municipal-level downscaling to enhance operational utility.</div></div>","PeriodicalId":8120,"journal":{"name":"Aquacultural Engineering","volume":"111 ","pages":"Article 102599"},"PeriodicalIF":3.6,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aquaponics performance optimization: The impact of hydraulic loading rate on striped murrel (Channa striata) and lettuce (Lactuca sativa L.) production in a vermicompost-supplemented system","authors":"Venisza Cathy John ,&nbsp;Ajit Kumar Verma ,&nbsp;Murtaza Hasan ,&nbsp;Hare Krishna ,&nbsp;Prativa Sahu ,&nbsp;Kishore Kumar Krishnani ,&nbsp;Sukham Munilkumar ,&nbsp;Prem Kumar ,&nbsp;Tincy Varghese ,&nbsp;Chandrakant Mallikarjun Hittinahalli","doi":"10.1016/j.aquaeng.2025.102598","DOIUrl":"10.1016/j.aquaeng.2025.102598","url":null,"abstract":"<div><div>The rising global food crisis calls for adopting circular economy concepts like aquaponics for effective nutrient and resource reuse for sustainable development. The study for 90 days aimed at optimizing the performance of striped murrel (<em>Channa striata</em>)-lettuce aquaponics for different hydraulic loading rates (HLR) of 2, 4, 6, 8 and 10 m/day with vermicompost extract supplementation at 27.5 mg/L in all treatments. The increase in HLR exhibited a positive linear relation between water quality and fish growth. A parallel growth of fish and plant was recorded at 4 m/day (66.81 ± 1.59 g and 1481.56 ± 46.30 g) and 6 m/day (65.80 ± 1.80 g and 1455.91 ± 30.94 g), respectively, while at higher HLR a linear decline was observed. The study revealed that the interaction between the physico-chemical characteristics of culture water was influenced by HLR, with significant reduction in total ammonia nitrogen (TAN) and nitrite at increased HLR, while nitrate, phosphate and iron exhibited a reverse trend which increased with higher HLR. The serum glucose, cortisol, alanine transaminase (ALT), aspartate transaminase (AST) and superoxide dismutase (SOD) in liver of fish were significantly higher at 2 m/day. The results displayed that all tested HLRs were effective, while HLR of 4 and 6 m/day improved water quality, mineral content of lettuce and production of striped murrel- lettuce aquaponics. The separate quadratic regression model fitted for different HLR with fish and plant production was 5.4 and 5.9 m/day, respectively. Hence, a HLR of 5.6 m/day with vermicompost supplement was recommended as the best compromise for optimal performance of striped murrel-lettuce aquaponics.</div></div>","PeriodicalId":8120,"journal":{"name":"Aquacultural Engineering","volume":"111 ","pages":"Article 102598"},"PeriodicalIF":3.6,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristics of aquaculture sludge produced from two different fish diets and its impact on biogas production","authors":"Abhinav Choudhury,&nbsp;Christine Lepine,&nbsp;Michaela Hersom,&nbsp;Christopher Good","doi":"10.1016/j.aquaeng.2025.102597","DOIUrl":"10.1016/j.aquaeng.2025.102597","url":null,"abstract":"<div><div>Assessing the feasibility of anaerobic digestion (AD) for treating recirculating aquaculture system (RAS) sludge requires understanding how fish diet changes affect waste characteristics and, subsequently, the AD process. In this study, sludge produced from RAS utilizing two fish diets (FA and FB) was anaerobically digested in batch reactors at 35 °C for 39 days. The two sludges differed in crude fat, chemical oxygen demand, total Kjeldahl nitrogen, total phosphorus, and volatile fatty acid concentrations. Normalized cumulative methane (CH₄) production was significantly higher for FB (346 ± 5 mL CH₄/g volatile solids [VS]) than FA (279 ± 4 mL CH₄/g VS), which could be attributed to FB’s higher crude fat content (27.4 ± 4.7 % compared to 12.2 ± 1.9 % for FA on a dry matter [DM] basis). However, the CH₄ production rate was higher for FA during the first 10 days of the study, with a maximum of 74.5 ± 1.8 mL CH₄/day on day 8, most likely due to the higher initial total VFA concentrations in FA (3.0 ± 0.2 g/L) compared to FB (2.0 ± 0.2 g/L). Sludge FB also increased peak hydrogen sulfide concentration (2763 ± 82 ppm). Elevated total ammonia nitrogen concentrations (&gt; 3 g/L) were observed in both FA and FB treatments post-digestion due to the high crude protein content in the two sludges (&gt; 30 % DM). The study showed that fish feeds with similar crude fat and protein content can result in different aquaculture waste characteristics, substantially impacting biogas production from AD.</div></div>","PeriodicalId":8120,"journal":{"name":"Aquacultural Engineering","volume":"111 ","pages":"Article 102597"},"PeriodicalIF":3.6,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of different culture substrates on the water environment and growth performance of Babylonia areolata in a recirculating aquaculture system","authors":"Jiahua Zhang ,&nbsp;Jie Wang ,&nbsp;Zhaojun Gu ,&nbsp;Xuan Che ,&nbsp;Xingguo Liu","doi":"10.1016/j.aquaeng.2025.102596","DOIUrl":"10.1016/j.aquaeng.2025.102596","url":null,"abstract":"<div><div>This study evaluates the effects of different substrates (PVC culture nests, ceramic particles, and sand) on <em>Babylonia areolata's</em> growth performance, water environment, and microbial community in a recirculating aquaculture system (RAS). A RAS, integrating vertical sedimentation tanks, nano-aeration devices, and foam separation equipment with ecological culture nests, was designed to address issues in traditional culture models. Over 180 days, water quality parameters, microbial diversity, growth condition, and enzyme activity of B. areolata were monitored. Water quality remained stable: dissolved oxygen was 5.04–7.98 mg/L, pH 7.26–8.46, ammonia nitrogen 0.05–0.25 mg/L, and nitrite nitrogen 0.021–0.069 mg/L. Different substrates significantly affected snail growth and water environment regulation. The sand group had the highest final shell length (35.46 ± 3.02 mm) and body weight (11.5 ± 1.04 g), while the ceramic particle group showed lower growth rates. Microbial community analysis revealed higher diversity in PVC and sand substrates (Shannon index 6.83–6.91), and the ceramic particle group had significant enrichment of some antibiotic resistance genes (ARGs). Enzyme activity analysis indicated dynamic changes in antioxidant and digestive enzymes. Lipase activity in the ceramic particle group was significantly lower than in other groups (p &lt; 0.05). In conclusion, PVC ecological culture nests combined with the efficient water treatment system can maintain stable water quality and support high - density culture (1500 ind./m²). This study provides a feasible technical solution for <em>B. areolata</em> recirculating aquaculture and scientific insights for substrate selection and ARGs control.</div></div>","PeriodicalId":8120,"journal":{"name":"Aquacultural Engineering","volume":"111 ","pages":"Article 102596"},"PeriodicalIF":3.6,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MC-MobileFishNet: An efficient algorithm for phenotypic analysis in heat-resistant breeding of Micropterus salmoides using keypoint detection","authors":"Yidan Zhao ,&nbsp;Ming Chen ,&nbsp;Guofu Feng ,&nbsp;Wanying Zhai ,&nbsp;Peng Xiao ,&nbsp;Yongxiang Huang ,&nbsp;Jinchi Zhu","doi":"10.1016/j.aquaeng.2025.102590","DOIUrl":"10.1016/j.aquaeng.2025.102590","url":null,"abstract":"<div><div>The breeding of heat-resistant fish holds significant economic value in aquaculture, and phenotypic analysis reflects the growth performance of fish in high-temperature environments, making it a key factor in selecting heat-resistant varieties. To efficiently conduct phenotypic analysis for the breeding of heat-resistant Micropterus salmoides, we designed a phenotypic analysis system specifically for the selection of heat-resistant Micropterus salmoides. Utilizing a stereo keypoint detection method with two vertically aligned cameras and curve fitting analysis, the system accurately analyzes fish phenotypes. Our approach inherently avoids the pixel matching issues found in global stereo algorithms and effectively handles occlusion and overlap problems. The proposed model integrates the MobileNetV3 module and Squeeze-and-Excitation attention mechanism into the YOLOv8 backbone network to enhance feature extraction. Additionally, the neck section introduces a novel multidimensional feature concatenation structure called MultiConcat. This structure fuses and concatenates features across multiple dimensions through weighted integration, suppressing irrelevant features while emphasizing the effective ones. The improved model demonstrates significant performance enhancements, with mAP<span><math><msub><mrow></mrow><mrow><mtext>50:95</mtext></mrow></msub></math></span> increasing by 3.7%, while model parameters and FLOPs decreased by 0.41 MB and 0.692G compared to the baseline model. The inference speed also increased, with FPS rising from 33.78 to 40.82. Experimental results demonstrate average accuracies of 97.65% for total length, 98.49% for body length, 93.34% for head length, and 96.20% for body height. Moreover, comparison experiments in aquaculture ponds demonstrated the model’s strong generalization, making it highly efficient and accurate in real fish ecology monitoring.</div></div>","PeriodicalId":8120,"journal":{"name":"Aquacultural Engineering","volume":"111 ","pages":"Article 102590"},"PeriodicalIF":3.6,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144572694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated multi-trophic culture of Penaeus vannamei with Crassostrea sp. and Gracilaria sp. in a nursery system","authors":"Priscilla Celes Maciel de Lima ,&nbsp;Elizabeth Pereira dos Santos ,&nbsp;Danielli Matias de Macedo Dantas ,&nbsp;Luis Otavio Brito ,&nbsp;Alfredo Olivera Gálvez","doi":"10.1016/j.aquaeng.2025.102595","DOIUrl":"10.1016/j.aquaeng.2025.102595","url":null,"abstract":"<div><div>Currently, aquaculture seeks to implement production techniques with better use of nutrients that increase biosecurity and productivity. Therefore, the use of Brazilian native oyster <em>Crassostrea</em> sp. and red seaweed <em>Gracilaria</em> sp. in integrated multi-trophic culture (IMTA) with Pacific white shrimp <em>Penaeus vannamei</em> was evaluated for 40 days in synbiotic nursery system. Four treatments were evaluated: a shrimp monoculture (control without oysters and seaweed in static intensive system), Multi-SOS (culture of shrimp, oyster juveniles and seaweed), Multi-SO (shrimp and oyster culture), and Multi-SS (shrimp and seaweed culture). For water quality, Multi-SOS and Multi-SS treatments presented the lowest values of nitrogenous compounds (TAN, nitrite-N and nitrate-N), while Multi-SO and Multi-SOS presented lower results regarding settleable solids (respectively, 2.84 mL L⁻¹ and 2.02 mL L⁻¹) than other treatments. At the end, the shrimp performance was significantly higher in the Multi-SOS (0.80 g of final weight and 2.02 kg m⁻³ of yield) and Multi-SS (0.85 g of final weight and 2.09 kg m⁻³ of yield) treatments compared to the control. The proximate composition showed flocs with lower crude protein and lipid content and a greater amount of ash in Multi-SOS and Multi-SO compared to the other treatments (control and Multi-SS). Therefore, integrated multi-trophic culture with oysters and seaweed is recommended, as oysters could control settleable solids, and seaweed, in addition to providing a supplementary source of food for shrimp, also reduced toxic nitrogenous compounds.</div></div>","PeriodicalId":8120,"journal":{"name":"Aquacultural Engineering","volume":"111 ","pages":"Article 102595"},"PeriodicalIF":3.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mathematical modelling of ammonia nitrogen dynamics in a recirculating aquaculture system","authors":"Lingwei Jiang ,&nbsp;Mingwei Jia ,&nbsp;Bing Guo ,&nbsp;Daoliang Li ,&nbsp;Tao Chen","doi":"10.1016/j.aquaeng.2025.102594","DOIUrl":"10.1016/j.aquaeng.2025.102594","url":null,"abstract":"<div><div>The concentration of ammonia nitrogen plays a crucial role in aquaculture, as an excessive level can hinder the growth of aquatic animals or even cause death. Commercially available ammonia nitrogen sensors are expensive, have limited lifespans, require frequent maintenance, and may exhibit drift over time. In this study, we designed a laboratory-scale recirculating aquaculture system using Siberian sturgeon (<em>Acipenser baerii</em>) as the cultured species and conducted a 52-day experiment. Based on this system, a new mathematical model was developed to predict ammonia nitrogen, combining fish bioenergetics with mass balance of ammonia nitrogen. A sensitivity analysis of model parameters was conducted to identify the key ones, and then a Bayesian optimisation method was used to calibrate these key parameters with data collected from the laboratory recirculating aquaculture system. Validation on unseen data demonstrated that the model could provide a reasonable prediction of ammonia nitrogen.</div></div>","PeriodicalId":8120,"journal":{"name":"Aquacultural Engineering","volume":"111 ","pages":"Article 102594"},"PeriodicalIF":3.6,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of drum filters, swirl separators and foam fractionation on water quality in pilot scale recirculating aquaculture systems","authors":"Kim João de Jesus Gregersen ,&nbsp;Lars-Flemming Pedersen","doi":"10.1016/j.aquaeng.2025.102593","DOIUrl":"10.1016/j.aquaeng.2025.102593","url":null,"abstract":"<div><div>This study investigated the impact of different filtration configurations on water quality in pilot scale recirculating aquaculture systems (RAS), focusing on the removal efficiency of particulate and dissolved organic matter. The experiment was conducted over six weeks using 12 pilot-scale RAS units, each stocked with juvenile rainbow trout (<em>Oncorhynchus mykiss</em>) in freshwater. Four treatment configurations in triplicate systems were evaluated: drum filter only, a swirl separator combined with a drum filter (Swirl + Drum), a drum filter combined with a foam fractionator (Drum + FF), and a swirl separator combined with a foam fractionator (Swirl + FF). The results showed that the combination of a swirl separators and a drum filter achieved the highest removal of organic matter per day. Despite the high organic matter removal in the Swirl + Drum treatment, it did not translate to the best water quality outcomes, highlighting the importance of addressing dissolved organic matter and fine particulates. Pilot RAS with foam fractionation showed the most significant improvements in water quality parameters, particularly in reducing total BOD, COD, and microbial activity. The Swirl + FF treatment exhibited a large decrease in total BOD (40 % reduction) and total COD (27 %), with microbial activity reduced by over 55 % compared to the RAS with drum filters only. The study also identified that Swirl + FF, led to more total phosphorus and orthophosphate , suggesting that particles smaller than the swirl separator's threshold but too large for foam fractionation contributed to increased phosphorus levels. This study underscores the effectiveness of combining swirl separators and drum filters for particulate removal and highlights the crucial role of foam fractionation in managing dissolved organic matter and enhancing overall water quality in RAS. These findings provide new knowledge of solids removal and water quality and may have important implications for the design and optimization of RAS systems.</div></div>","PeriodicalId":8120,"journal":{"name":"Aquacultural Engineering","volume":"111 ","pages":"Article 102593"},"PeriodicalIF":3.6,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144549783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}